Valve-reaming tool



ca. E. MOEN VALVE REAMING TOOL Filed Jan. 27, 1927 Nov. 11, 19,30,

Patented Nov. 11, 1930 PATENT OFFICE GEORGE E. MOEN,.OF KELSO, .WASHING'ION,

vALvE-nEAMme TOOL This invention relates to boring or reamingdevices and particularly to a combination tool designed especially for the purpose of operatingupon the valveseats, valves, and other allied parts of engines.

The general object of the invention is to provide a combination tool which may be readily mounted upon an engine block and by which ports may be bored, valve stem guides reamed, valve seats trued up or narrowed, and in fact whereby a large range of work of this character may be accomplished. Another object is to provide a tool of this character which is very simple, accurate, and

j relatively cheap; whichmay be quickly ap plied to the work upon which the tool operates, which will p'rovide for supporting the tool carrying shank or stem both above and below the reamer ifdesired,whichsupport- 1 mg means is self-aligning, thus eliminat ng any possibility o-fthrowing the reamer or other tool out cfalignment with the valve stem guide.

a A further object is to provide means wherew .by the tool maybe positively fed, thus permitting the use of dull'reamers or operating upon hard seats. j y a Still another object is to provide acombination tool of this character in which the 33 tools may be readily changed for boring, reaming, narrowing or facing off a valve seat, etc., and which may be used with ordinary jigs if desired. j

Another object is to so construct the tool that the stem of the cutting tool may be adjusted into angular relation to the work.

A stillfurther object is to provide a tool of this character with means wherebythe support for the tool need not be changed fromits adjusted position in order to change the cutter or other implement of the tool.

Still another object isto provide apilot shank with means whereby it may be clamped i engagement with a valve stem guide to thus hold the reaming tool in proper alignment. j

My invention is illustrated in the accompanying drawings wherein i Application filed January 27, 1927. Serial No. 164,041.

in accordance with my invention;

of the jaws.

" Figure l is a vertical sectional view of a valve seat reamer audits support constructed Fig. 2 is a top plan View of the construction illustrated in Figure 1, the feed screw being in section; j

Fig. 3 is a top plan view of the feed nut;

Fig. 4 is an enlarged fragmentary vertical section through the spindle or shank and the jaws of the supporting arms on the line 4-4 of Figure 1.

Fig. 5 is a fragmentary vertical sectional view through the spindle and the jaws on the same line as Figure 4-, the ball being omitted and a sleeve being substituted; Fig. 611s afragmentary sectional view through one of the jaws and showing amodified form of socket; i

Fig. 7 is an elevation ofthe socket; Figures 8 and 9 are fragmentary elevations showing modifications of the joints between the supporting arms and the jaws;

10 is a fragmentary face View of one Referringto these drawings 10 designates what I term the pilot shank or spindle. This shankis cylindrical in form and thelower portion of the shank is reduced in diameter as at 11, providing a shoulder12. The upper portion of the shank is formed with a screwthreaded bore 13. This bore, as hereinafter explained, may extend entirely through'the shank. The lower end of the shank is longihead 17 at itslower end. The pilot shank 1O fits within a reamer carrier 18 formed asa sleeve fora portion of its length to provide a longitudinally extending bore 19 within wlnch the shank 1O fits, the reamer carrier tudinally split, as at 14, and formedwi'th a bein rotatable u on this shank. The reamer carrier is formed with tapered seat 201115011 which the reamer 21 may be mounted and instance, by the nut 22. Abovethe upper end of the bore '19the reamer carrier is held in place by any suitable means as, for

end of the reamer carrier is a feed bolt or screw 25. i This has, screw-threaded engage- Inent inthe bore 13 and, also has screwthreaded engagement at its upper end'in the and 27. Each of these sections has a. pro

jecting portion 28 engaging in'the circuin ferential ,groove 24: and above this is provided with the screw-threaded bore The like extremities of these two jaws are pivoted to each other by a pin or holt gt) andatfithe opposite ends these j aws maybe provided with ineansfor clamping them together;

Under-somecircumstancessit is desirable-to zprovlide a supporting-bracket for the reamer carrier and I have -illustrat"ed a bracket 33 eo-or supporting arm which is longitudinally slotted as at 34. A-bolt 35-extends-throughthis slot and through a longitudinally gextending slot 36 formed in 9a longitudinally ex itending basefifi. Flhis base'36, as illustrated, isvboltedito asupportingblock 37-by neansof the bolt 37%, which iblockis :proivided with-a screw 37 forholding'the blockin'placezupon 'an engine block oi upon the faceiofithe work to he operated on. Thebo-lt- 35 carries ithe nut34?.

ity ofthe bracket? 33 are two jaws 38 which are engaged awi thieach other: at their free. ends .byme'ans'ofa tightening boltiell), e1 6 @1161 "9 which is pivotedito -one ;of the, and the otherend of whichis adi ipted to; entera slot in =the-other ,jaw. Lhe middle portion of each ja wis [formed with a-con'cavity 40 and above an d below this concavity with anlarcu- {ture approximately concentric so :the spindlel=8. v Dlsposed withinrand engaged -byitheconcavities 40 is the-ball 1 42 which has --a central aperture through whi chthe shanlrer spindle -1.0 passes.1' The upper endi-of the bali-istr'um rated but the-lower aend is' extended downward or prolonged asat I 23 and \eiiteriorly screw-threaded forkthe reception of the nut The concavities 4Q constitute a, socket for the ball 42 and obviously thehalln1ay-be rotated or oscillated in-ithis-soc-ket to hring the lr'eameri carrier 18 with the shank 10 or spin-- dle into any desired angular relation to the 1 supporting bracket 33a11dthen'theball nay split feed nut formed ofthe two sections 26 Thus, for instance, the,jaWS may be .1ongitu-, dinallyslotted and a bolt 3l'inayhe piyoted} in one slot andengage through theother slot,

- wBolte-d or otl'ierwise: attachedtoithe j iate reeess 41. These recesses 41 have a curvebe clamped in this adjusted positionby the bolt 39. .If it be desired to hold the reainer carrier l8-a'nd the stem or shank 1 0 rigidly in place at right angles to the bracket 33 for certain classes of work, the ball 42 may be removed entirely and the reainer carrier will then engage within the recesses ll and obviously cannot moveout of-a position at right angles to the plane of the jaws. The, prolongation 43 of the b'all niay be split or other- --wise formed softhat the nut 44 will clamp the ball firmly upon the reamer carrienlS so that theballand rea-nier carrier rnust oscillate together with no z play.

While the -bal'lso'ckets or se'ats 40 may be circumstances Iprovide auxiliary wear plates formed directly in the j aw-s, yet under :some i 45, see Figures '6 and 7, adapted" to -bedisposedon :the inside faces ofothe aws 38 and held in place byzaknut 46 on the stud-boltz'l :and held ifroniirotationby pins These wear plates are also provided with seats 471 as well as with the sockets lDiso thatthe ball may be removedand thereamer carrier held .firinly in these seats 41 :and atall times at rrightranglesto the i-plane of; the ,j awsan'dirom (5 f1 hav'ezillustratedthe manner in which the )rea ner carrier inia-y be mounted within sleeve tw so as to-be heldatall times-at exactly aany-inoveinent out of this plane. j In .Eigure right angles to the planeof (the bracket 33. i

I Thus; iniplaeeof-hayingthereamer carrier 18 ishown inzFigure 55provide a sleeve 49 w 1Gl1 takes 'theg lplace, of the ball 42 and which is clamped snugly upon thereainer carrier. Qt course,- 1t w ll he 'understeod :that the :reamer carriei rnustlbe ireeto wrotate within-the vj aw-s and, -.ther efore; (the nut either when used with the ball 42 or' with tlLG-SlGQVGAQ-ShOUld -screw-threaded at :its lower end-tor engagem'ent by the nut 44 and: which may be thus not-be soetightly clainpedastogpreventrotationofithe reamercarrier. i

While in Figure 1 I have illustrated the i j aws: as being mounted at. th eir rear'ends-upon the uppe'r face oftheamnor bracket 33, I do not wish to be limited to this. Thebracket 83 'inay. .be gbiturcated its forward'iend, as

shown in ,Figure 8;, =to :receive the aw-s 38 or each i aw. may be bifurcated; asshown n Figure 9, to receive the. bracket gii.

y In many, cases it will not be necessary to.

use the feed nut26: anldthe feednut'then be: entirely rernhved"but I under. some ClIClllllf stances thei feed nut is necessary as, for instance 'where'a valve seat iisxi 'ery hardor the" 'reainer oldanddull.

In the operation of this device, the lower 1 end of the stem or shank 10 i s passed through 1 the valvestfi i guide "and thus is iheldf'in" v proper axial relat onv to the Valve seat'itonbe' reamed, Theire'amer l is placed'uponathe carrier and the carri'e'r' insertedu ponrthe steni '10 with the fe ed ;;screw,;passing throughithe carrier. The clamping nut 26 is then closed upon the screw 25, if a positive feed is required. It will, of course, be. understood that by rotating the plug 16 relative to the shank 10, the plug may beforced up into the bore-l5, thus expandingithe lower end of the pilot shank and holding it in clampin engagement with the valve stem guide. I necessary, the supporting bracket 33 may be used inorder to hold the reamer carrier in its proper 'set position. Y By providingthe brack- 'et and reamer carrier with a ball and socket connection, the top supporting bracket will be self-aligning and non-binding. 1

Particular attention'is called tothe fact that? theprovision oi the jaws 38 permits the reamer carrier and thepilot shank to be re moved from their-operative engagement with the bracket 33 without in any way changing the adjustment of the bracket 33, the base 36, or the block 37, if the latter is used, and withp out requiring that more than one of the jaws 38be shifted toopenthe jaws. -Thus, one of the jaws may be released and shifted to fully open position, the reamer carrier with its attendant parts removed, anew tool or different tool inserted, and then the reamer carrier and allied parts may be returned exactly to the position in which they were, thus doing away with the necessityof readjusting the mecha nism each time that a change is made in a tool.

i This is a very important feature of this inven tion as it eliminates the time lost in readjustment and renders the replacement of the tool in exactly the same spot absolutely certain.

Furthermore; by pivoting thejaws upon the bracket is possible to getthem out ofthe way when changing reamerss. The provision of the jaws 38 secures aidevice for thepu pose described which may he used more quick- 'ly and morevcheaplyfifor allkinds of valve work than-any other form of reamer known givenqby the ball takes care of this.

in some engines the valve seat and valvejstem to me, as all reamers maybechanged without changing the supportingbracket 33'a11d this 18 particularly necessary as onone valve there are seven different changes and seven difierent re'amers to be used. Thus, there is an adjustmentor change for reaming,for the valve stem guidemne for 15 reamers, one for a reamer, one for a 15reamer, one for reaming a hole for an oversize valve head, and one for engaging a valve seat and without the provision of these jaws 38, it would be necessary to readjust the bracket 33 seven different times. 1 v i j The straight holder,: that is, the reamer aarrier used without-the ball 42, is used when valve stem guides arereanied, If valve seats are worked on, however, it is necessaryte use the ball as in many cases the guide is not true or straight with the head and the flexibility Again guide are at-an angle tothe head or block and then pjr' pourse, the hall type ofholder must be used. The ball type of holder as better the fit of the portion 11 within the guide hole, the surer one is of getting the reamer holder 18 straight in line. The plug 16 is tightened so as to secure a proper fit.

It ishfurthermore necessary to provide the plug 16 particularlyifthe workis hard or the reamer dull so that the feed mechanism may be used which, ofcourse, exerts an up ward pull upon the member110.

.It will be seen that this tool is particularly simple and accurate and that it .may be quickly applied to aj ob. On-most work only the partslO, 16 and 18 need be used. By my construction a support is provided both above and below the reamer, this support being self-aligning, eliminating anypossibility of throwing the reamer out of alignment with the valve stem guide. This toolis adapted for use in reaminga valve stem guide in an oversize valve stem. If the valve seats are toowide they can be narrowed. If they are in bad shape, the seats canbe reamed and new valve seats put in. This tool may operate on any part of the valve seat or guide or valve stem guide, or on the exhaust ports or intake ports so as to grind them flat or oversize asdesired. I have provided a positive feed for hard seats or dull'reamers if re quired. Of course, thereamer carrier 18 is to be operated by means of a wrench orlike devicefapplied to theportion 23.

It-will be noted'thatfthe reamer. holder 18 mayeither be straight or tapereditoncarry either straighter: tapered reamers. I have illustrated a tapered reamer and a tapered seat 20 on the reamer holder but I do not wish to be limited to this. Where the reamer isto be used in working on valve guides, the reamer met a long type similar to a drill and would have a straight round shank which would be disposed within the carrier 18 in place of the shank 10. This reamer or drill, substituted for the shank 10, would be held in place in carrier 18by means of the pin shown in dotted lines in Figure 1 and designated 18 passing through the lower threaded extension 18 and through the stem of the reamer or drill; It will thus be seen that this'construction is adaptedeither to carry a reamer of thecharactei' shown in Figure 1 or a long reamer ordrill.

Tclaim:--

1. A implement of the character described l tnehnding'ra. sanpor tialig hau ing-tun Q1 aposed aws zhlnged themtohmnng seats; the V jaws being-amenable tmvandmr from :ean

other, aneansafqrgadjusting theij amend-hold- :ing them in iadjnstedzpositiens, is 31516373 tdiseposed within :the seats, zanda ztnal'zc nlzier m0- xtilbdblygdispezsea withinsaid sleene. 2;;An amp-lament ot'rthemhanacizer :de-

. scribed including .a-snpportingianm, a dr ga osed, nelatinel-y 1 movable jaws hinged. ito

' fthe'ernn'eaeh formed with-amoneane sodk tgn :todl carrier having aghal l engaging in Said 23, he implement 0f; athe tohnltaotertde .rscrihedinchidingza suppoltt ingzarm, opposed,

meme-wa movable jaws, (6.31611 hin'gedly unountedtthereon, the jaws ihavling confironb lingmoneayeso'ckets, jthe Walls of each socket being formed with .aiignecLavcuate seats, an

. annular ball'idtsposedzhetaween ithBzSOfikGhS,

and ftool :canrier (intending :through V and amounted :fiorlrotationwithixmthe annular'hall. j 4.,And'mp1emeirt ofvthe characteridescnzbed iinchfdingzaksuppontingarm;opposed,srelatine- 41y amenable jaws hinged ethereto, theejaws havlizngwconf'ronting concave sockets,- the wall 130 r V I '1 through the ab al l and being :rotata'hl e therein, sthe upper :end of thektocl :canrier alntwing v(means wherebi iitana beirotatcd ean'diasleefize 'zthlvough which athe toolca'nrier Emmy be disposed; r said :sleeivexheing a-dapted 'atoifit said V n;airnplern-enti iof":the l ehamtsflfae scntb'ed i'ncluding'a supp'ortingiarm gopp osed, ,-1;e1'a ti;v e1grfenlhvahle jaws each wpivotal l y maimed-- :thereon, itheuj awe haying confrontingl con'cane sockets, athe Wall 1oeachsocket fsection ithe iballha-rving ian extension beyond 17110 sockets, a clamping inutwengagi-ng :th-azexv ftension, and icyllindric'a'l rtodlicanrier .dis-

.ahemin.. I a;

o16.'fln.an .l-mplement Ofzthe .-ch aracter' definrabefdg: ibasehaving. ":a l ongltu-dlnal o slot, iine'ans forn1amp1ngthe hase to :thework and posed." through the lhatl zand zrotatahle.

, ;adj1'1sting-:itxthereongia bracket longitudinal- V gl-y zadjus'tahlejupon the -2base, opposed Irelpdii-f fl 'yzm ifilil jawsihing dty mounts d 0 th ascribed, aizbase {adapted to zheaqlie iped HPQ hereby t ey beadjrawn towards each wot er an gainst the toollicanr e c w he e y jthegv mey-becne edz fo re sethetwlcarrie U an implement of the char pcterde fw i'k, a-bracket adiustabountedupon Y i V the base, and opposed-jaws nounteduponithe bracket, one of said jawsbeingaprqoted for :mevement was (.QI' :trnm-nhe -.0.jther jaw,

means 01 drawing said jaws towards each other or permitting gthem to be relatively opened andga tool-carnier rotatably mount- :ed between the jaws.

,soribcd,fa base adapted .to be -.c1am;ped "upon the-worlgia bra cket;adjustab1y -mount'ed upon the lbase, and [opposed jaws {each pl-votally "mountediupon the bracketaand being anovable award or away from each othegmeans engagingthe'iree ends of {the jaws for draw- :8,- In an ,i'lnplernent (character -deing :them :jtowards each other, said mean f a :9. A-toolnfthe shameasaiaa inaua I ing a suppontingarm, a member mountedon the arm and zangula yzachustable it 'e 'eo'n,

permitting the. j aws :to be {opened-cut, :and a tool holder v rotatgxblgr carniedfbetween sa d (member fimd longitudinal-1y fs1;idahle;t11ere-- -.th ough,- a supp ting; member slidably mounted :Within the Tea-men carrier and .ex-

tending ybeyond the same and. having means whereby =it ;n1ay rbe-ueng'aged with .a Valve stern guide :and' clampedwith in the guide agalnstmlongitudi-nal movement, :and' means operativelly engaging {said supporting anernhenandthersalmer carrier forcausing ELPOSlztive'fecdof etherearnercarnier: with reference tothe sup Qrting rnemh'eryandlthe supporting 1 arln-inieither direction. a a

4,110. A tool ofthe character described including'a tubular;reamer1carrier, ,asupport- :the lower (end-f ithe reamercarrier, means ,-at the'lowerendofsaidshank'Wherehyihmay ingshankdisposed therein for flongitudinal Vmovement:thereth'roughaand projectingbelow betenga-ged 'Withiawalve stern guide fidndfhld from longitudinal "movemenh ascrew extend-f i ing upward frommtheishank and passing zlooselyihrough the \reamer carrier, and a nut s havingswiveled engagement with the upper end ofgthereamercarrier andscrew-threaded engagementewith'said screw. 7 11. A tool .of the character described in-'' eludinga -:tubu1&r reameru-carrien' a pilot shankdisposedWithinthe reamer carrier and projecting :below its -':1o'wervend, ithe-lower end ofztheshank. having. "means whereby it 1 ;m aybe engagedwith and clamped Within a vahzestem guide,:the upper end of the'pilo't reamer carrier, 1a supporting arm through WhlCh the reamer carrler may shde anda twoshankcarrying a1screW-thre aded portionex- L: V I tendingloosely through the upper endofthe v 1320 flpart' /nutleach part hauingfswiveled engage .men-t with :theupperiend oif'ith'e .rearner car-- .rier' and threaded enga-g'e1nen t vaithv said 'screw threaded portion. a

drical ta also below the lower end thereof, the pilot shank having means at its lower end whereby it may be engaged with a valve stem guide, a screwthreaded member extending upward from the upper end of the pilot shank and passing loosely through the upper end of the reamer carrier, a feed nut having swiveled engagement with the reamer carrier and threaded engagement with the screw-threaded memher, said supporting arm being formed in two sections hinged for movement toward or away from each other, and clamping the reamer carrier when the sections are forced toward the reamer carrier, means for adjusting the sections toward each other, and means for supporting said arm.

13. An implement of the character described including an arm having opposed relatively movable jaws hinged to the arm whereby said jaws may be shifted into an angular relation to each other which will permit the insert or removal of a tool carrier laterally between the jaws and said jaws having confronting seats, a tool carrier rotatably disposed between the jaws and in said seats, means for shifting the tool carrier axially within the seats, and means for relatively adjusting the jaws toward or from each other, said means being releasable from one of said jaws to permit the jaws to be swung into a fully opened position.

In testimony whereof I hereunto afiix my signature.

' GEORGE E. MOEN. 

